SELECT 
  cscart_product_descriptions.product_id, 
  cscart_product_descriptions.meta_keywords, 
  cscart_product_descriptions.meta_description, 
  cscart_product_descriptions.search_words, 
  cscart_product_descriptions.promo_text 
FROM 
  cscart_product_descriptions 
WHERE 
  cscart_product_descriptions.product_id IN (
    128, 51118, 51117, 51116, 51115, 51114, 
    51113, 51165, 51164, 51163, 51162, 
    51161, 52, 51183, 20, 51188, 51187, 
    51186, 51185, 51184, 51194, 51193, 
    51192, 51191, 51190, 51189, 19, 51220, 
    51219, 51218, 51217, 51216, 146, 51448, 
    51449, 51231, 51230, 51229, 51228, 
    51227, 51226, 51225, 109, 51243, 51242, 
    51241, 51240, 51239, 36, 51253, 51252, 
    51251, 51250, 51249, 34, 51273, 147, 
    51277, 51276, 51275, 51274, 16, 114, 
    84, 51352, 51351, 96, 89, 51390, 51391, 
    51392, 51393, 51394
  ) 
  AND cscart_product_descriptions.lang_code = 'ru'

Query time 0.00130

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "51.11"
    },
    "table": {
      "table_name": "cscart_product_descriptions",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY",
        "product_id"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id",
        "lang_code"
      ],
      "key_length": "9",
      "rows_examined_per_scan": 73,
      "rows_produced_per_join": 73,
      "filtered": "100.00",
      "index_condition": "((`test_uchur_k`.`cscart_product_descriptions`.`product_id` in (128,51118,51117,51116,51115,51114,51113,51165,51164,51163,51162,51161,52,51183,20,51188,51187,51186,51185,51184,51194,51193,51192,51191,51190,51189,19,51220,51219,51218,51217,51216,146,51448,51449,51231,51230,51229,51228,51227,51226,51225,109,51243,51242,51241,51240,51239,36,51253,51252,51251,51250,51249,34,51273,147,51277,51276,51275,51274,16,114,84,51352,51351,96,89,51390,51391,51392,51393,51394)) and (`test_uchur_k`.`cscart_product_descriptions`.`lang_code` = 'ru'))",
      "cost_info": {
        "read_cost": "43.81",
        "eval_cost": "7.30",
        "prefix_cost": "51.11",
        "data_read_per_join": "333K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "meta_keywords",
        "meta_description",
        "search_words",
        "promo_text"
      ]
    }
  }
}